主要納入先 しゅようのうにゅうさき Meanings Noun key customers; key customer; major clients; major client Kanji 主 main. Read as シュ. 要 need. Read as ヨウ. 納 deliver. Read as ノウ. 入 enter. Read as ニュウ. 先 ahead. Read as さき. Jinuma: Japanese Dictionary · Word lists